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Old 19-02-2012, 09:36 PM
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allan gould
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Join Date: May 2005
Location: Brisbane
Posts: 4,485
The f3.3 reducer was made for small chip ccd cameras such as the DSI or DSI II pro or an st7. The qhy8 chip is way too large for the 3.3 converter -the f6.3 will just cover the chip with some vignetting.
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